Fastening device



FIG. 1 is a front, top, left side perspective view of a fasteningdevice;

FIG. 2 is a back, bottom, right side perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a back view thereof;

FIG. 5 is bottom view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a left side view thereof, the right side being a mirror image.

The broken lines in the drawings illustrate portions of the fasteningdevice that form no part of the claimed design.

CLAIM The ornamental design for a fastening device, as shown and described. 